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Implications of blast exposure for central auditory function: a review.

Frederick J Gallun1, M Samantha Lewis, Robert L Folmer

  • 1Department of Veterans Affairs, Rehabilitation Research and Development National Center for Rehabilitative Auditory Research, Portland VA Medical Center, Portland, OR 97239, USA. Frederick.Gallun@va.gov

Journal of Rehabilitation Research and Development
|January 24, 2013
PubMed
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Blast events can harm auditory processing, affecting speech comprehension and sound localization. More research is needed for effective clinical tests and treatments for blast-exposed individuals.

Area of Science:

  • Auditory neuroscience
  • Neurotrauma
  • Military medicine

Background:

  • Blast events pose significant risks to auditory system functions, impacting both peripheral sensitivity and central processing capabilities.
  • Effective auditory processing is crucial for understanding speech and localizing sound in complex acoustic environments.
  • Blast-induced auditory dysfunction presents unique challenges that may be inadequately addressed by current diagnostic and treatment tools.

Purpose of the Study:

  • To highlight the risks of blast exposure to auditory system functions.
  • To emphasize the need for refined clinical tests for central auditory dysfunction following blast exposure.
  • To discuss potential treatment options and the lack of clinical evidence supporting their efficacy.

Main Methods:

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  • Review of existing literature on blast exposure effects on the auditory system.
  • Analysis of the requirements for accurate auditory processing (time, frequency, space).
  • Identification of current and potential future challenges in diagnosing and treating blast-related auditory issues.

    • Main Results:

    • Auditory system functions, from peripheral to central levels, are vulnerable to blast events.
    • Accurate encoding of auditory patterns is essential for speech clarity and sound localization, especially in noisy conditions.
    • Existing clinical diagnostic and treatment tools may be insufficient for aging populations with combined blast-related and other brain injuries.

    Conclusions:

    • Further research is required to develop sensitive clinical tests for blast-induced central auditory dysfunction.
    • Clinical evidence is lacking to recommend specific treatments like hearing aids or auditory training for this population.
    • An updated understanding of blast-related auditory issues is crucial for improving the quality of life for Veterans.